Overview
The SN74AVC32T245NMJR from Texas Instruments is a 32-bit dual-supply bus transceiver designed for low-voltage bidirectional translation between different voltage nodes. This device is part of the Texas Instruments Widebus+™ family and is optimized to operate with supply voltages ranging from 1.2 V to 3.6 V. It supports asynchronous communication between data buses and features control inputs referenced to VCCA, allowing for flexible and reliable data transmission.
The device includes direction-control (DIR) and output-enable (OE) inputs, enabling the user to control the direction of data flow and to disable the outputs, effectively isolating the buses. The SN74AVC32T245NMJR also includes VCC isolation and Ioff circuitry, which prevents damaging current backflow during power-down states.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage (VCCA, VCCB) | -0.5 | 4.6 | V |
| Input Voltage (VI) | -0.5 | 4.6 | V |
| Output Voltage (VO) in High-Impedance State | -0.5 | 4.6 | V |
| Output Voltage (VO) in High or Low State | -0.5 | VCCA + 0.5 / VCCB + 0.5 | V |
| Continuous Output Current (IO) | -50 | 50 | mA |
| Operating Free-Air Temperature (TA) | -40 | 85 | °C |
| Junction-to-Ambient Thermal Resistance (RθJA) | 26.7 | - | °C/W |
| Package Type | nFBGA (96 pins) | - | - |
| Body Size | 13.50 mm × 5.50 mm | - | - |
Key Features
- 32-bit noninverting bus transceiver with dual-supply capability.
- Operates with supply voltages from 1.2 V to 3.6 V.
- Supports bidirectional translation between different voltage nodes (1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V).
- Direction-control (DIR) and output-enable (OE) inputs for controlling data flow and output states.
- VCC isolation feature to ensure high-impedance state during power-up or power-down.
- Ioff circuitry for partial-power-down applications, preventing damaging current backflow.
- ESD protection: 4000 V Human-Body Model (A114-A) and 1000 V Charged-Device Model (C101).
Applications
- Personal Electronics
- Industrial
- Enterprise
- Telecom
Q & A
- What is the primary function of the SN74AVC32T245NMJR?
The primary function is to act as a 32-bit dual-supply bus transceiver, enabling bidirectional data translation between different voltage nodes.
- What is the voltage range for VCCA and VCCB?
VCCA and VCCB can operate with supply voltages ranging from 1.2 V to 3.6 V.
- How does the direction-control (DIR) input work?
The DIR input controls the direction of data flow between the A and B buses.
- What is the purpose of the output-enable (OE) input?
The OE input can disable the outputs, placing them in a high-impedance state and effectively isolating the buses.
- What is the significance of VCC isolation in this device?
VCC isolation ensures that if either VCC input is at GND, both ports will be in the high-impedance state.
- How does the Ioff circuitry benefit the device?
The Ioff circuitry disables the outputs during power-down, preventing damaging current backflow through the device.
- What are the ESD protection ratings for this device?
The device has ESD protection ratings of 4000 V Human-Body Model (A114-A) and 1000 V Charged-Device Model (C101).
- What are the typical operating temperatures for the SN74AVC32T245NMJR?
The device operates over a temperature range of -40°C to 85°C.
- What is the package type and body size of the SN74AVC32T245NMJR?
The device comes in an nFBGA (96 pins) package with a body size of 13.50 mm × 5.50 mm.
- In which applications is the SN74AVC32T245NMJR commonly used?
It is commonly used in personal electronics, industrial, enterprise, and telecom applications.
